Applied Physics Letters · 1990 · 48 citations · 3 references
EngineeringMaterials EngineeringMaterials ScienceElectronic MaterialsSemiconductor DevicesSemiconductor MaterialsDopingP-n JunctionsSemiconductor Device MaterialsSemiconductor PhysicsSemiconductor SurfacesSurface Chemistry Of SolidsChemical AdsorptionDoped SemiconductorsDoping In NanostructuresDoping In Thin FilmsReverse Bias CharacteristicsSelective DopingSemiconductor DopingSurface Adsorption Phenomena
A new doping method named molecular layer doping (MLD) is proposed. MLD is based on surface chemical adsorption of dissolvements from induced dopant gas molecules. Ultrashallow boron-doped layers are successfully achieved by MLD using B2 H6 gas. The p+ n junction formed by MLD exhibits excellent characteristics, with a reverse bias leakage current of less than 2.5×10−16 A/μm2 at 5 V. MLD is attractive in that it offers high-density, shallow-junction, damage-free, selective doping in a short time.
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